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WorldView-2

WorldView-2 is the first high-resolution 8-band multispectral commercial satellite. It was launched in October 2009. Operating at an altitude of 770 kilometers, WorldView-2 provides 46 cm panchromatic resolution and 1.85 meter multispectral resolution.

WorldView-2 has an average revisit time of 1.1 days and is capable of collecting up to 1 million square kilometers of 8-band imagery per day.

The WorldView-2 system, offers incredible accuracy, agility, capacity and spectral diversity, substantially expanding its imagery product offerings to both commercial and government customers.

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+ Specifications

Design and Specifications
Launch Information

Date: October 8, 2009
Launch Vehicle: Delta 7920 (9 strap-ons)
Launch Site: Vandenberg Air Force Base, California

Orbit Altitude: 770 kilometers
Type: Sun synchronous, 10:30 am descending node
Period: 100 minutes
Mission Life

10-12 years, including all consumables and degradables
(e.g. propellant)

Spacecraft Size, Mass and Power

5.7 meters (18.7 feet) tall x 2.5 meters (8 feet) across,
7.1 meters (23 feet) across the deployed solar arrays
2615 kilograms (5765 pounds)
3.2 kW solar array, 100 Ahr battery

Sensor Bands
  • Panchromatic: 450 - 800 nm
  • 8 Multispectral
    Coastal: 400 - 450 nm
    Blue: 450 - 510 nm
    Green: 510 - 580 nm
    Yellow: 585 - 625 nm
    Red: 630 - 690 nm
    Red Edge: 705 - 745 nm
    Near-IR1: 770 - 895 nm
    Near-IR2: 860 - 1040 nm
Sensor Resolution
(GSD=Ground Sample Distance)
  • Panchromatic:
    • 46 cm GSD at nadir
    • 52 cm GSD at 20° off-nadir
  • Multispectral:
    • 1.85 m GSD at nadir
    • 2.07 m GSD at 20° off-nadir
Dynamic Range 11-bits per pixel
Swath Width 16.4 kilometers at nadir
Attitude Determination and Control

3-axis stabilized
Actuators: Control Moment Gyros (CMGs)
Sensors: Star trackers, solid state IRU, GPS

Pointing Accuracy and Knowledge

Accuracy: < 500 meters at image start and stop
Knowledge: Supports geolocation accuracy below

Retargeting Agility

Time to Slew: 200 kilometers: 10 seconds

Onboard Storage

2199 gigabits solid state with EDAC

Communications Image and Ancillary Data: 800 Mbps X-band
Housekeeping: 4, 16 or 32 kbps real-time, 524 kbps stored, X-band
Command: 2 or 64 kbps S-band
Max Contiguous Area
Collected in a single Pass
(30° off-nadir angle)

Mono: 138 x 112 km (6 strips)
Stereo: 63 x 112 km (3 pairs)

Revisit Frequency
(at 40°N Latitude)

1.1 days at 1 meter GSD or less
3.7 days at 20° off-nadir or less (0.52 meter GSD)

Geolocation Accuracy
(CE90)

Demonstrated <3.5 m CE90 without ground control

Capacity

1 million km² per day

+ Features

FeaturesBenefits

High resolution

  • 46 cm panchromatic at nadir
  • 1.85 m multispectral at nadir
Provides highly detailed imagery for precise map creation, change detection, and in-depth image analysis

Industry-leading geolocation accuracy

  • High capacity over a broad range of collection types
  • Bi-directional scanning
  • Rapid retargeting using Control Moment Gyros (>2x faster than any competitor)

Geolocate features to less than 5 m and create maps in remote areas, maximizing the utility of available resources

High image quality

  • Large field-of-view
  • High contrast (MTF)
  • High signal to noise ratio
  • 11-bit dynamic range

Stereoscopic collection on a single pass, ensures image continuity and consistency of quality

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